Dust-gatherer for abrading-machines.



T; G. PLANT. Y

DUST GATHEEEH FOB. ABRADING MACHINES.

APPLICATION FILED MAR. 4, 1910.

Patented July 26, 1910.

THOMAS G. PLANT, 0F BOSTON, MASSACHUSETTS.

DUST-GATHERER FOR ABRADING-MACHINES.

Specification of Letters Patent.

Patented July 26, 1910.

- Application filed March 4, 1910. Serial No. 547,242.

To all whom it may concern:

Be it known that I, THOMAS G. PLANT, a citizen of the United States,residing at Boston, in the county of Sufi'olk and State ofMassachusetts, have invented an Im provement in Dust-Gatherers forAbrading- Machines, of which the following description, in connectionwith the accompanying drawings, is a specification, like characters onthe drawings representing like parts.

The invention to be hereinafter described relates to dust gatherers forabrading machines, and more especially such devices as applied tomachines for abrading, trimming or scouring portions of boots and shoes,suchas the sole edges, bottoms, or heels.

In machines of the general type indicated, it is essential that theabrading, scouring, or trimming tool be rotated at high speed and thatthe operative have free access to the abrading, scouring, or trimmingtool not only at the acting edge thereof but at the disk end or side ofthe tool. As Well known by those skilled in the art, such machinescreate a large amount ofdust of varying fineness which not only subjectsthe operative to much distress and annoyance, but gathers about themachine, on the floor, and finally gets into the shaft bearings which itsoon destroys. Attempts have been made to overcome these and otherobjections arising from the cause stated, by providing such machineswith various forms of dust hoods connected to an air exhaust, but in allsuch cases the tools have been either so completely covered by a closefitting shield that only a part of the dust has been carriedaway, or thehood has been formed so that it greatly interfered with the propermanipulation of the shoe, and in either case the exhaust air currentshave not been caused to act upon the dust properly, so that much dustand dirt has heretofore accumulated about the machine with theconsequent objections noted.

In the present invention the aim has been to provide a dust gatherer inconnection with a tool hood and to so dispose the parts and the suctionair currents that all dust shall be entirely carried away either bypassing directly into the tool hood or by being gathered as, it isdischarged rearward by the tool and then carried lnto suitable dustopenings, all as will best be understood from the accompanying drawingand following description of one form of the invention.

In the drawings :Figure 1 is a perspective view of a boot and shoemachine, more particularly designed for treating the edges of shoe solesand provided with the present invention for eliminating all dust as itis created; Fig. 2 is a section on the line A-A, Fig. 1, lookingdownward; and Fig. 3 is a section on the line AA, Fig. 1, lookingupward.

In the illustrated form of the invention a column 1 is provided,surmounted by a head 52 carrying the actuating means for the tools whichare designed to treat the soles or heels of boots and shoes. Saidactuating means being not of the present invention is not herein shownand described in detail, but is typified by a pulley 3 secured to theshaft of the tool 4, by which said tool 4 may be given rapid rotation inthe direction of the arrow, as indicated in Fig. 1. The tool 5,preferably disposed below the tool 4, is likewise suitably driven,preferably by connections with the shaft of the tool 4, not shown, sothat both of said tools are rotated in the direction as indicated by thearrows, Fig. 1.

In treating the edge portions of boots and shoes it is desirable to havetwo tools 4 and 5, one, as 4, being provided with an abrading materialof suitable character and preferably employed for treating the sole edgearound the forepart, while the tool 5, likewise pro-vided with asuitable abrading material, is more especially designed for treating'theshank edge portion of the sole.

Disposed adjacent the tool 4 is a dust hood 6 having an opening 7, Fig.3, which partially embraces the rotating tool 4. Likewise disposedclosely adjaeent the tool 5 is a dust hood 8 having an opening 9disposed directly above the tool 5, the construction in each case beingsuch that if a blast of air be drawn through the dust hoods 6 and 8, thedust and other particles created by the tools 4 and 5 will tend to bedrawn into the openings 7 and 9 of the dust hoods. Since, how ever, thetools 4 and 5 rotate at high speed, many of the particles of dust ordirt will be thrown from the tools andiescape the influence of the aircurrents passing into'the openings 7 and 9 of the dust hoods, and tointercept these particles thus escaping from the tools 4 and 5 thepresent invention further provides the dust gatherer, which as a whollgemay be indicated in Fig. 1 by the letter The gatherer B is disposedback. of the tools 4: and 5 in such position that it will intercept andgather all dust particles thrown from these tools and not passing intothe openings 7 and 9 of the dust hoods. In the present form of theinvention the dust gatherer B comprises a casing, four of whose sidesare closed, leaving one side open so that the shoe presented to thetools a and 5 may be conveniently manipulated with respect to said toolswithout interference from the dust gatherer.

The dust gatherer B preferably comprises the two backwardly convergingrear walls 10 and 11, their inclination to each other being such, asindicated in the drawings, that particles of dust or dirt striking ateither side of the center 12 of said rear wall will be deflected towardthe center thereof and into suitable openings 13 disposed at the centralportion 12 of the rear wall.

It will be noted that the rear wall of the dust gatherer B is carriedupwardly and bent over to form the top 1 1 of the dust gatherer, saidtop 14 being preferably disposed above the plane of the tools 4: and 5,so that any particles of dust thrown from said tools in an upwarddirection and failing to-enter the openings 7 or 9 of the dust hoods 6and 8 will strike the top wall 14: of the dust gatherer and eitherbedrawn into one of the central openings 13, the top one, Fig. 1, forinstance, or said particles will travel backward and impinge against therear wall of the'dust gatherer and there be directed into the openings13, as already described.

The bottom portion of the dust gatherer B is preferably formed asindicated in Fig. 1, wherein it comprises a rectangular member havingthe downwardly converging bottom plates 15 which meet at the centralopening 16 thereof, said bottom plates 15 thus being inclined to directany particles dropping thereon toward the opening 16 for a pur- 3056that will presently appear. The back ottom plate 15 connects directlywith the back wall of the dust gatherer, as indicated in Fig. 1.

One si by a plate 17 which may be secured, as at 18, to the head 2 ofthe machine, or other-- wise held in place as desired. The plate 17effectively directs all dust particles passing from the tools toward therear wall of the dust gatherer and prevents sidewise escapement thereof.

Extending from, a suitable air suction means, which may be of any usualor de sired type and is consequently not. shown, is

a dust trunk or fine 19, Fig. 1, which, in

the present illustration, extends upward and at the rear of the dustgatherer B to which it is connected by thev openings 13 centrally of theback wall of said gatherer. The dust de of the dust gatherer B isclosed:

trunk 19 extends over the top of the dust gatherer B, as indicated, andcommunicates with the dust gatherer by the upper opening 13 which, asindicated, is at the central back and top portions of the dust gatherer.To the terminal edge portion of the dust trunk 19-the hood 6 is hinged,as at 20,.so that said hood may be lifted when desired to enable accessto be had to the tool 4:. The hood 8 is preferably not hinged, butcommunicates with the dust trunk 19, as indicated in Fig. 3.

Extending from the dust trunk 19 below the bottom of the dust gatherer Bis a pipe or flue 21 which communicates with the opening 16 in thebottom of the dust gatherer.

From the constructionherein described as one embodiment of the presentinvention, it will be noted that particles of dirt or dust detachedfromthe shoe by the tools 4 or 5 are eithercarried directly into the hoods 6or 8, the openings 7 and 9 of which are closely adjacent said tools, orare thrown forcibly backward towardthe rear wall of the dust gatherer.Such particles of dust thrown backward from the tools will impingeagainst the converging rear walls 10 and 11 in a manner such that theywill be deflected toward the central portion 12 of said rear wall andconsequently be drawn into one of the openings 13- into which air isbeing constantly drawn by the suction means connected to-the dust trunk19. Any particles failing to be drawninto the openings 13 or into thehoods, as hereinbefore described, will fall upon the downwardly-:converging bottom plates 15 of the dust gatherer and be drawn into theopening 16 from whence they will pass into the dust trunk 19. I

It will be noted that the dust gatherer has a plurality of openings 13extending at the central converged portion 12 of the rear wall, and thatitwhas another opening 13 .which extends from the rear vertical portionof said rear wall over the top of the dust gatherer, as indicated inFig. 3, and that these openings, Fig. 3, are disposed relatively to thehoods 6 and 8 to be substantially midway between them so that particlesthrown from either tool l-or 5 will readily find their way into one ofthe openings 13 either at the top or at the rear portion of the dustgatherer, and failing in this will drop upon the bottom of the dustgatherer and be drawn through the opening 16. i

What is claimed is:'

1. In a machine for treating boots'and shoes, a dust hood having anopening for carrying away dust, a dust gatherer back of said hood tocatch dust failing to enter the dust hood on its way thereto,- and adust trunk or suction flue, said dust gatherer'and dust trunk having aplurality of communicating openings disposed at difierent heights in theback wall of the dust gatherer.

2. In a machine for treating boots and shoes, a dust hood having anopening for receiving dust particles, a dust gatherer comprising acasing disposed back of said dust hood and having 'a top and backportion extending continuously from said dust hood, and a dust trunk orsuction flue, said dust trunk and dust gatherer havinga plurality ofcommunicating openings disposed at different vertical heights in theback wall of said dust gatherer.

3. In a machine for treating boots and shoes, a dust trunk, a dust hoodin communication with the dust trunk and having an opening to carry awaydust, and a dust gatherer comprising an enlarged casing disposed back ofthe dust hood to intercept and gather particles of dust which fail toenter the dust trunk through the dust hood, said dust gatherer havingcommunication with the dust trunk.

4. In a machine for treating boots and shoes, a dust trunk, a dust hoodin communication with the dust trunk and having an opening through whichmuch of the dust passes, and a dust gatherer for catching dust particlesthat fail to enter the dust hood and comprising an enlarged casinghaving a rearwardly converging rear wall and provided with openingscommunicating with the dust trunk.

5. In a machine for treating boots and shoes, a dust trunk, a dust hoodin communication With the dust trunk and having an opening through whichmuch of the dust passes, a dust gatherer comprising an enlarged casinghaving a rearwardly converging rear wall, and a top wall extending tothe dust hood, and provided with openings communicating with the dusttrunk.

6. In a machine for treating boots and shoes, a dust trunk, a dust hoodcommunicating With the dust trunk and having an opening through whichmuch of the dust passes, and a dust gatherer for gathering orintercepting particles that fail to go into the dust hood, having arearwardly converging rear wall, a top wall, and a downwardly convergingbottom wall, said rear, top, and bottom walls having openingscommunicating with the dust trunk.

7. In a machine for treating boots and shoes, a dust trunk, a dust hoodcommunicating with the dust trunk and having an opening through whichdust passes and a dust gatherer for gathering or intercepting particlesthat fail to go into the dust hood, having a rearwardly converging rearwall, a top wall, one inclosing side wall, and a downwardly convergingbottom wall, said rear, top, and bottom walls having openingscommunicating with the dust trunk.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

THOMAS Gr. PLANT.

Witnesses:

A. L. HAGGERTY, ALFRED H. HANDLEY.

